%0 Journal Article %T Comparative Study on Polarization Spectral Parameters of Fruit in Southern Xinjiang Based on Roujean Model %A Jiayi Xu %A Xue Huang %A Huaping Luo %A Yuting Suo %A Feng Gao %J American Journal of Analytical Chemistry %P 59-73 %@ 2156-8278 %D 2021 %I Scientific Research Publishing %R 10.4236/ajac.2021.123005 %X Based on the study of phase angle and wavelength in pBRDF (Polarized bidirectional reflectance distribution function), roujean model was proposed to describe Orient (Polarization phase angle) quantitatively. The Roujean model was used to quantitatively describe different fruits intensity components (F₀₀) and polarization phase angle (Orient), and the simulation results were analyzed and compared using statistical analysis and comparison methods to realize the prediction from the regular model to the outdoor fruit tree canopy to the canopy of outdoor fruit tree canopy random distribution. The experimental results showed that: 1) when the phase angle of jujube was 52.19бу, 66.51бу and 88.26бу, the R² and average errors of F₀₀ parameters described by Roujean model are 0.9982, 0.9963, 0.9912 and 3.80%, 4.17%, 6.40%, respectively; and the R² and average error of Orient parameters described by Roujean model are 0.9056, 0.9223, 0.9260 and 6.23%, 3.32%,